FIELD: oil and gas industry.
SUBSTANCE: construction of multihole wells involves drilling of bores in productive formations and well development. Initially, the first bore is drilled in formation of lower productivity. The drilled bore without development is filled with fluid on a hydrocarbon basis forming filter cake not more than 0.5 mm thick. After that, the second bore is drilled in formation with higher productivity, using drill mud. The well is developed by simultaneous stimulation of both formations. At that, fluid on a hydrocarbon basis is used with density not less than density of drill mud used at drilling of the second bore.
EFFECT: decrease of well formation clogging and increase of its productivity.
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